A293746 - cp's OEIS frontend

A293746 Number of sets of nonempty words with a total of n letters over septenary alphabet such that within each prefix of a word every letter of the alphabet is at least as frequent as the subsequent alphabet letter.

n	a(n)
0	1
1	1
2	2
3	6
4	15
5	45
6	136
7	430
8	1414
9	4835
10	17143
11	62843
12	238245
13	930418
14	3741710
15	15445815
16	65384356
17	283113205
18	1252393193
19	5648731817
20	25945636702
21	121172059749
22	574764521186
23	2765620022767
24	13486540312370
25	66587056756662
26	332594340605540
27	1679325348600290

[1, 1, 2, 6, 15, 45, 136, 430, 1414, 4835, 17143, 62843, 238245, 930418, 3741710, 15445815, 65384356, 283113205, 1252393193, 5648731817, 25945636702, 121172059749, 574764521186, 2765620022767, 13486540312370, 66587056756662, 332594340605540, 1679325348600290]

cp's OEIS Frontend

A293746 Number of sets of nonempty words with a total of n letters over septenary alphabet such that within each prefix of a word every letter of the alphabet is at least as frequent as the subsequent alphabet letter.

Table of values

List of values